package top.abilities.util.util;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import javax.crypto.*;
import javax.crypto.spec.SecretKeySpec;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.text.ParseException;
import java.util.Date;

/**
 * @Auhtor: abilites
 * @Description AES加解密工具类
 * @Date: 2017/9/20 17:46
 * @Modified By:
 */
public class AESUtil {

    private static final String encodeRules = "fesco-abilites";

    /**
     * 加密
     * 1.构造密钥生成器
     * 2.根据ecnodeRules规则初始化密钥生成器
     * 3.产生密钥
     * 4.创建和初始化密码器
     * 5.内容加密
     * 6.返回字符串
     */
    public static String AESEncode(String content) {
        try {
            //1.构造密钥生成器，指定为AES算法,不区分大小写
            KeyGenerator keygen = KeyGenerator.getInstance("AES");
            //2.根据ecnodeRules规则初始化密钥生成器
            //生成一个128位的随机源,根据传入的字节数组
            SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
            random.setSeed(encodeRules.getBytes());
            keygen.init(128, random);
            //3.产生原始对称密钥
            SecretKey original_key = keygen.generateKey();
            //4.获得原始对称密钥的字节数组
            byte[] raw = original_key.getEncoded();
            //5.根据字节数组生成AES密钥
            SecretKey key = new SecretKeySpec(raw, "AES");
            //6.根据指定算法AES自成密码器
            Cipher cipher = Cipher.getInstance("AES");
            //7.初始化密码器，第一个参数为加密(Encrypt_mode)或者解密解密(Decrypt_mode)操作，第二个参数为使用的KEY
            cipher.init(Cipher.ENCRYPT_MODE, key);
            //8.获取加密内容的字节数组(这里要设置为utf-8)不然内容中如果有中文和英文混合中文就会解密为乱码
            byte[] byte_encode = content.getBytes("utf-8");
            //9.根据密码器的初始化方式--加密：将数据加密
            byte[] byte_AES = cipher.doFinal(byte_encode);
            //10.将加密后的数据转换为字符串
            //这里用Base64Encoder中会找不到包
            //解决办法：
            //在项目的Build path中先移除JRE System Library，再添加库JRE System Library，重新编译后就一切正常了。
            String AES_encode = new String(new BASE64Encoder().encode(byte_AES));
            //11.将字符串返回
            return AES_encode;
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        //如果有错就返加nulll
        return null;
    }

    /**
     * 解密
     * 解密过程：
     * 1.同加密1-4步
     * 2.将加密后的字符串反纺成byte[]数组
     * 3.将加密内容解密
     */
    public static String AESDecode(String content) {
        try {
            //1.构造密钥生成器，指定为AES算法,不区分大小写
            KeyGenerator keygen = KeyGenerator.getInstance("AES");
            //2.根据ecnodeRules规则初始化密钥生成器
            //生成一个128位的随机源,根据传入的字节数组
            SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
            random.setSeed(encodeRules.getBytes());
            keygen.init(128, random);
            //3.产生原始对称密钥
            SecretKey original_key = keygen.generateKey();
            //4.获得原始对称密钥的字节数组
            byte[] raw = original_key.getEncoded();
            //5.根据字节数组生成AES密钥
            SecretKey key = new SecretKeySpec(raw, "AES");
            //6.根据指定算法AES自成密码器
            Cipher cipher = Cipher.getInstance("AES");
            //7.初始化密码器，第一个参数为加密(Encrypt_mode)或者解密(Decrypt_mode)操作，第二个参数为使用的KEY
            cipher.init(Cipher.DECRYPT_MODE, key);
            //8.将加密并编码后的内容解码成字节数组
            byte[] byte_content = new BASE64Decoder().decodeBuffer(content);
            /*
             * 解密
             */
            byte[] byte_decode = cipher.doFinal(byte_content);
            String AES_decode = new String(byte_decode, "utf-8");
            return AES_decode;
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            throw new RuntimeException("配置文件中的密码需要使用AES加密，请使用top.abilities.util.util.AESUtil工具类修改这些值！");
            //e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        }
        //如果有错就返加nulll
        return null;
    }

    public static void main(String[] args) {
        System.out.println(AESUtil.AESEncode("root"));
        if (true) return;
        /*String[] keys = {
                "", "fescohmsenew"
        };
        System.out.println("key | AESEncode | AESDecode");
        for (String key : keys) {
            System.out.print(key + " | ");
            String encryptString = AESEncode(key);
            System.out.print(encryptString + " | ");
            String decryptString = AESDecode("9QCphnxYGKwnKFwt4CTMuQ==");
            System.out.println(decryptString);
        }
        System.out.println("aa:::::"+AESUtil.AESDecode("ci5eqXf+jx6PxDmRqYG7Lg=="));
        System.out.println(AESUtil.AESEncode(""));*/
        String ndate="2021-1-19";
        Date nowDate=new Date();
        try {
            Date date=DateUtils.parseDate(ndate,new String[]{"yyyy-MM-dd"});

            Date userLeaveTime = date;
            Date userLeaveValidTime = date;
            //限定离职n天后，定时任务执行的周期
            Date userMaxRecycleTime=userLeaveValidTime;
            String userLeaveValidTimeStr = "";
            String userMaxRecycleTimeStr = "";
            if (userLeaveTime != null) {
                userLeaveValidTime = DateUtils.getDayStart(DateUtils.addDay(userLeaveTime, 10));
                userMaxRecycleTime=DateUtils.addDay(userLeaveValidTime, 2);
                userLeaveValidTimeStr = DateUtils.LONG_DATE_FORMAT.format(userLeaveValidTime);
                userMaxRecycleTimeStr=DateUtils.LONG_DATE_FORMAT.format(userMaxRecycleTime);
            }

            System.out.println("是否到离职回收时间-{}"+nowDate.after(userLeaveValidTime)+"是否执行"+nowDate.before(userMaxRecycleTime));
//            java.util.Date date= new java.util.Date();
            DateUtils.SHORT_DATE_FORMAT.format(date);
            System.out.println(DateUtils.SHORT_DATE_FORMAT.format(DateUtils.addDay(date, 91)));
        } catch (ParseException e) {
            e.printStackTrace();
        }

        Date endDate=DateUtils.addMinute(nowDate,25);
        System.out.println(DateUtils.getTimeStampStr(DateUtils.getDayStart(nowDate)));
        System.out.println(DateUtils.getTimeStampStr(DateUtils.getDayStart(endDate)));
        System.out.println(DateUtils.getDayStart(endDate).after(DateUtils.getDayStart(nowDate)));
        System.out.println(endDate.after(nowDate));




        System.out.println(AESUtil.AESEncode("root"));
        System.out.println(AESUtil.AESEncode("fesco#123"));
        System.out.println(AESUtil.AESDecode("efFUDmMgdAOYgRWcsq/6+fUAqYZ8WBisJyhcLeAkzLk="));
        System.out.println(AESUtil.AESDecode("ci5eqXf+jx6PxDmRqYG7Lg=="));

    }

}
